Logic Question

[MsNinjaginja]

I would take my llama then attack the game show people with it and ride home in my car

[angbaboynasiga]

it's the monty hall problem

[yamenhawit]

This was from the movie 21. the answer os you switch because you go from having a 2/3 chance of being wrong from your initial choice, to having a 1/2 chance if you change your choice (this time given only 2 options).

[psychlopes1976]

Actually logically it shouldn't make a difference if you keep your choice or change it, but the way I remember it , your odds are better mathematically if you change your choice.

[anniro121]

it is better to change because when you start you have a 1 in three chance which means you had a 2/3 chance of getting it wrong.

[hexagoncubez]

dude... your trying to compare overlaying context data... in other words... 1/3 was your odds on each door at first... then the denominator was subtracted by 1... making 1/2 for both of the doors... your comparing the invert of each... and still subtracting the denominator when you should be adding... so i will go though it your way... when it is started you have a 2/3 of losing .. then when one is shown you would have a 2/4 : 1/2 chance... not a 2/2 : 100% chance... do you understand?

[Grintoth]

hexagoncubez= lies.

[DUmfk2]

gimme the llama please. petrol is going up in price and i really want a llama gimme the lllllaaaaaaammaaaaaa ya nugget

[rboy5boy]

I WANT DA LLAMA

[MandyPandy1652]

lmao "i want the llama"

No u dont! hehe..

[Dazizco]

Me wantz laama

[rubikssolver08]

change and go for the car'

[kookykikat]

OMG DUDE!!! seriously u took this question from the movie "21"... you know the one where they start counting cards.. at first you have 33.3% chance, and then when given the option to switch, you have 66.6% chance.. thts so from the movie

[seerusgod]

This video came out before the movie, so I guess he didn't get it from the movie. Second, this question is taught in statistics classes throughout the country, so many people know about it for that reason.

[d4m4s74]

if you pick one (1/3) and one gets removed you still have that 1/3 chance the door you picked is it, but if you choose the other you have a 1/2 chance

but I wonder, if you just remove your choice and choose the same door again, what happens then?

[mcdoodle123]

you should change cause it was 33 % that ur right and 66% ur wrong. when ur asked to change its been off set so its 66 % in the other door. good one i asked my math teacher to explain in awhile ago

[wsld1234]

You should change because when you first choose you have a 1in3 chance. One of the doors is then shown to you but your door is still a 1in3 chance of being the car therefore the other door is now 2in3 chance of being the car (or something like that.)

[mesniburekfan]

chances are 50/50

[Grintoth]

wrong

[drumafreak19]

@mesniburekfan false if you switch your chances of getting the car are 6.66666666666666666 and if you stand it is 3.3333333333333333

[beelal123]

the answer is the most likely way of winning is changing when he asks you because. There are 2 llamas and 1 car, you pick one card he shows you a llama. if you stick with your original choice thats a 1/3 chance because that you haven't changed your door, if you change it is a 2/3 chance because thats how much out of 1/1 is left. (I'm very good at maths and im 11)

[leeds0united]

wt!!! ur chances are 50/50 anyway

[leeds0united]

dont slate me for gettin it worng i didn't see the solution video

[juggleblood]

i'd rather have the llama.

[Utubefounder]

oh not the monty hall classic, youtube has so killed this: dont you hate when ppl say *answer* just cos they heard it ..even if they dont understand it!!!...I'm one lol

[bob9825]

It's called the Monty Hall problem, it originated from Monty's gameshow, apparently a woman , Marilyn Vos Savant, with an iq off 228 was asked this question and she was the one who proved the odds of 2/3

[shutyourmouth2]

IQ of 228, eh? I am 100% certain that's impossible, not only because even the smartest of humans are that smart, but also because the IQ scale doesn't go that high.

[d4m4s74]

it's possible, but most IQ-tests don't give that high numbers

official ones do give that result

[HeelClickingFool]

this is from 21

[Grintoth]

I got it from the book "The Curious Incident of the Dog in the Nighttime." It's a famous logic problem. I forget it's real name though.

[HeelClickingFool]

yeah i know ive seen it before 21 also

its a good question

[nitrocan]

yeah i have read this book too and if you change, you have a better chance to win the car, this is called the mony hall problem

[avenueq14]

if you change 2/3 chance you win

if you stay with the original door its 1/3 chance

[greatsauces]

The chances are 2/3 if you switch doors, of getting the car. Think about it this way: it is more probable of you picking a llama at the beginning, and as long as you pick a llama and change, you will always get the car.

[Grintoth]

You win

[zippoxl91]

if you change, then you have a 50 percent chance of getting the car, but if you stick with the lama, then you'll have a 100 percent chance of not getting the car...and the one that circled looked pretty obvious, so i would've gone with that one...

[Grintoth]

...what?

[drewm1273]

But I want the lama!

[Pizzscn]

here's a llama! there's a llama! And another little llama! FUZZY LLAMA! FUNNY LLAMA!! LLAMA, LLAMA, DUCK!!!!!!!!!!!!

[finishim4me]

Should you change???....Theres no right or wrong answer. If you change you will be in the same pedimented. The logic in this question is not probability. Its more like, dare I say it. Luck

[bazzieboy]

If you change you do get a higher chance! Think for example, if there are not 3 doors, but 100 doors. And there is only 1 car behind one of those 100 doors. Lets say you pick door No.1. Now he is going to open up all doors, except for 1 door and the door you choose. (thats 98 doors). So he opens up all doors except for (for instance) 64 and 1. Should you switch now? I think the answer is pretty clear =D. The question is exactly the same, im just working with higher numbers to make it clear!

[Grintoth]

THANK YOU! YOU UNDERSTAND!

[bazzieboy]

I'm gonna subscribe to u, (juggling and rubiks =D)!!

[Draitube]

You should change, the chances are 2/3 if you change to get the car. I read Curious Incident of the Dog too XD

[BoriquaBoy4694]

you have a 1/2 chances to get the car so eighther one has the same ammount of probability to have the car because we already know that one of them is the llamma and your ok with that so doesn't matter

[Grintoth]

nope.

[LexiconPrincess]

you should change because there is a 2/3 chance of gettinga car. Im not really this smart- i read this question in a book called the curious incident of the dog in the night-time. Its a good read and it doesn't make me feel dumb =]

[Grintoth]

Haha, that's where I read the question too. Yep, good book.

[Grintoth]

you should change, because you have a 2/3 chance of getting the car

[Grintoth]

you lost

[legok1d]

i would stick with the first because you pick 1 door thinking it's a car than it shows you the door next to it being a lama giving you a 66 percent chance instead of a 33% chance

[Grintoth]

close

[toewatcher007]

i would stick with the first choice. one must follow instinct sometimes logic does not answer all the varibles of life.

[Grintoth]

Yeah, but this is a logic problem.  Chances are, it will require logic.

[KConny]

You should change. The odds are that youn picked a lama on your first pick. Then the host eliminates a lama. Wich made the last door an alternative of that selection. So the car is more likley to be behind that door since the host didn't pick that when he had a 50/50 chance. That 50/50 chance is transferd on to you if you change. But if you keep your door it's still based on the pick you did when you had a 1/3 chance. Don't really know how to explain it...

[Grintoth]

Yep, I think you got it

[LoserDude28]

I remember this from a computer programming class I had in Freshman year. We wrote a program to figure out what the odds were, and it actually turned out that you have a 2/3 chance of being correct if you changed your answer and went with the other door. Unfortunately, I don't remember the exact logic behind it.

[Grintoth]

Yes, you're right

[wikedgamers]

what ever you say. Me and mex(see me videos to see who he his) plan on getting a lamma witch cost more than a used car

[Grintoth]

Yeah, but we're talking about a 2008 Ford Mustang Shelby.

[wikedgamers]

we want a UPS truck or a mail truck from a junk yard...

I think we need a lamma more

[solborimm]

0%, why you ask? this is just a question we wont get a carno matter what, and even if we did all of them would be llamas cus there just tryin to trick us.

[AntonioColangelo]

its a 50/50 chance

theres no way to accually figure it out

you just have to guess

[Grintoth]

nope. Watch the solution video

[greatsauces]

Incorrect

[piesuckssd]

the host is going to show you one of the lammas anyway, so you accually end up getting a 50/50 chance no matter what you pick. the try to make sound like you get a 1/3 chance, but the host is just going to get rid of one of the choices by showing you one of lamas,so no matter what, its really just like between 2 doors, one with a lama, and one with a car.

[Grintoth]

Nope, it's not 50/50

[ChrisTucket]

This isn't really a "logic" problem, it's more probability/luck. If you change doors, that's a personal preference unless you get some kind of lucky "hint" from the host that shows that you should change the door.

[Grintoth]

Nope, it's based on probability

[moderatelywell]

we did this in my statistics class the other day, if you switch you have a 2/3 or 66% better chance of getting the car, because your playing off the 66 percent chance that you picked a lamma the first time.

[Grintoth]

yeah, you got it

[rjvandy]

you should change your choice because you have better odds now of 1/2 than you did before 1/3 because one is eliminated

[ChrisTucket]

That is the WORSE logic ever.

[rjvandy]

well it's right

[rjvandy]

well it's right

[jfizz313]

you are stupid its a 50 percent chance but there was somthing you all issed that he said in the video watch it again and see did you hear it

[Grintoth]

No, there's nothing to hear. It's a 2/3 chance

[speedcuber13]

i believe that i should change the door to the lamma because it is a trick question. no i am just kidding i would change the door because lammas seem to groupe together. by the way i am first to comment fav and 3 to watch

[FosterFuel]

k first comment

i would stick with the door i chose bcuz if it is the one, then i would want to regret having switched

next, i would say it's obviously a 50/50 chance if u dont count the logic part

im also pretty sure that there's a logical(no pun/joke intended) answer, but of course it's always easier to visualize it if u know the answer...

[Grintoth]

Nope, not 50/50

[FosterFuel]

yeah, i mean to add that it's probobly not

[hagaren989]

i have no idea what you just said but this looks really challenging